Yeah, I wouldn't sweat it either. I sort of had the same problem over the weekend. I was bottling and I grabbed at least two bottles out of a group that hadn't been cleaned. They didn't have any visible funk, and I did sanitize, but I haven't had anything explode yet.
From what I've heard One-Step is rated as a sanitizer, but they can't call it that, since they just haven't bothered to get government ceritfication for it. Kind of like how certain farmers don't use pesticides, but can't say they're organic, since they refuse to pay the USDA the ceritfication fees. It's all about money.